Stock Option Plans, Shares Reserved and Warrants (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Compensation expenses			$ 3,172,078	$ 2,915,369
RSU [Member]
Compensation expenses	$ 305,000	$ 225,000	$ 563,000	$ 370,000
2009 Equity Incentive Plan [Member]
Options granted			2,778,289
Exercise price of options granted (in dollars per share)			$ 2.96
Aggregate intrinsic value of stock options outstanding	1,052,000		$ 1,052,000		$ 2,980,000
Aggregate intrinsic value of stock options exercisable	$ 179,000		$ 179,000		$ 1,009,000